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<html lang="en">
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    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
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<body>
    
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<script>
    var a =89
    var b =24
    var c =parseInt(a/b)
    console.log(c);//3天
    var d =parseFloat(a-(3*b))
    console.log(d);//17小时

    var aa = "华氏度"
    var ab = "摄氏度"
    var num = 5/9.0*(80-32)
    console.log(num.toFixed(3))
    
</script>